Ultra-loud 120dB output ensures clear signals in noisy sports fields or outdoor training sessions

Durable ABS+PC composite shell with precision-molded airflow channels for consistent performance

Patented dual-chamber design delivers piercing high-frequency tones audible up to 800m

Military-grade silicone mouthpiece resists teeth marks and maintains hygiene during prolonged use

Integrated lanyard loop enables instant access during referee duties or animal training

Waterproof IPX5 construction withstands rain/sweat for reliable use in all weather conditions

Rechargeable lithium battery provides 15hr continuous operation with USB-C fast charging

Professional-grade weight balance (78g) prevents neck strain during marathon competitions

Multi-frequency selector switch adapts to soccer/basketball games or pigeon/dog training

CNC-machined brass core ensures vibration stability for zero distortion at peak volume